VMLite VMware (ESX Server, Fusion, Virtual Server, Workstation, Player and ACE) Xen (Opensource) IBM POWER systems Operating system level virtualization software Microsoft Hyper-V OpenVZ FreeVPS Linux-VServer FreeBSD Jails Solaris Containers AIX Workload Partitions LXC [edit] Extended descriptions of selected virtualization software The following software products can virtualize hardware so that several operating systems can share it. Windows 2008 R2 Hyper-V provides x64 type 1 virtualization. Adeos is a hardware abstraction layer that can be loaded as a Kernel Module in Linux. It allows the loading of a real-time kernel as a module, at the same time as Linux but with higher priority. Denali uses paravirtualisation to provide high-performance virtual machines on x86 computers. Denali's virtual machines support specialised minimal OSs for Internet services. The system can scale to thousands of virtual machines. Denali does not preserve the application binary interface (ABI), and so applications must be recompiled to run within a library operating system; in this sense it is similar to the Exokernel. OKL4 from Open Kernel Labs is designed for use in embedded systems and is primarily deployed in mobile phones. It is the only commercial hypervisor employing capability-based security. OpenVZ provides operating system level server virtualization, built on Linux. Parallels virtualizes x86 to run unmodified PC operating systems, and uses a lightweight hypervisor technology to improve security and to increase the efficiency. Parallels has become popular for its ability to run Windows as a guest under Mac OS X on the Apple–Intel architecture. QEMU is a simulator based on a virtual machine, which gives it the ability to emulate a variety of guest CPU architectures on many different host platforms. Returnil Virtual System can virtualize Windows based systems, needs only a restart to rebuild the virtual machine. VirtualBox is an open source (GPL)/proprietary virtual machine developed by Sun Microsystems. It allows virtualization of x86 and supports various host operating systems including Windows, Linux, BSD and Solaris. It also supports VMware Workstation Virtual Machine Disk Format. Virtual Iron provides virtual machines for x86 that run unmodified operating systems, such as Windows, Red Hat and SUSE; open source, implements native virtualization, which delivers near-native performance for x86 operating systems. VMware provides virtual machines for x86 that can run unmodified PC operating systems. The technology involved in doing this is complex and also incurs (sometimes significant) performance overheads with hosted VMware products (VM Server and Workstation). ESX server provides near-native performance and a fully virtualized option (along with para-virtualization of some hardware components). Xen trades running of existing operating systems for running modified (paravirtualized) operating systems with improved performance. Virtual Iron provides full OS compatibility for existing or new OSes with near-native performance without the performance trade-offs between paravirualization and binary translation. Xen Virtualization system whose motivation differs from that of Denali in that it is intended to run a moderate number of full-featured operating systems, rather than a large number of specialised, lightweight ones. KVM is a Linux kernel module that enables a modified QEMU program to use hardware virtualization. Linux VPS Hosting - Fully Managed Linux Virtual Private Servers ... Linux VPS Hosting - Virtuozzo based fully managed Linux VPS hosting, virtual private server web hosting utilizing the latest Parallels virtualization and ... 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So performance is not affected by ... libJIT Just-In-Time Compilation library is a library for development of advanced Just-in-time compilation (JIT) in Virtual Machine implementations, Dynamic programming languages, and Scripting languages. Currently it is used for Common Intermediate Language, Ruby, Java, Domain-specific programming languages. [edit] See also Comparison of platform virtual machines Comparison of application virtual machines Virtual appliance Native development kit ICL's VME operating system Amazon Machine Image Virtual backup appliance Virtual disk image [edit] References ^ "Virtual Machines: Virtualization vs. Emulation". Retrieved 2011-03-11. ^ Smith, James E.; Nair, Ravi (2005). "The Architecture of Virtual Machines". Computer (IEEE Computer Society) 38 (5): 32–38. doi:10.1109/MC.2005.173. ^ http://www.vmware href="http://www.vpshub.net">vps /solutions/business-critical-apps/ ^ Smith and Nair, pp. 395–396 ^ http://www.vmwarez href="http://www.vpshub.net">vps /2006/05/super-fast-server-reboots-another.html ^ See History of CP/CMS for IBM's use of virtual machines for operating system development and simulation of new hardware [edit] Further reading James E. Smith, Ravi Nair, Virtual Machines: Versatile Platforms For Systems And Processes, Morgan Kaufmann, May 2005, ISBN 1-55860-910-5, 656 pages (covers both process and system virtual machines) Craig, Iain D. Virtual Machines. Springer, 2006, ISBN 1-85233-969-1, 269 pages (covers only process virtual machines) [edit] External links The Reincarnation of Virtual Machines, Article on ACM Queue by Mendel Rosenblum, Co-Founder, VMware Sandia National Laboratories Runs 1 Million Linux Kernels as Virtual Machines The design of the Inferno virtual machine by Phil Winterbottom and Rob Pike Software Portability by Virtual Machine Emulation by Stefan Vorkoetter Categories: Virtual machines | Operating system technology | Programming language implementation Log in / create account Article Discussion Read Edit View history Main page Contents Featured content Current events Random article Donate to Wikipedia Interaction Help About Wikipedia Community portal Recent changes Contact Wikipedia Toolbox Print/export Languages Afrikaans ??????? ????? Bosanski ????????? Català Cesky Dansk Deutsch Eesti Español Euskara ????? Français ??? Bahasa Indonesia Italiano ????? ??? Magyar ?????? Bahasa Melayu Nederlands ??? 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Contact us Privacy policy About Wikipedia Disclaimers Wikimedia Foundation Powered by MediaWiki January 11 - Parallels acquires ModernGigabyte, LLC.[14][15] June 17 - Parallels officially launches the first version of Parallels Server for Mac[16] September 1 - Parallels releases Parallels Desktop 4 for Windows and Linux[17] November 11 - Parallels releases Parallels Desktop 4.0 for Mac[18] 2009 November 4 - Parallels releases Parallels Desktop 5 for Mac[19] 2010 September 14 - Parallels releases Parallels Desktop 6 for Mac[20] [edit] Products Parallels uses Intel Core's virtualization technology to allow the virtual machine direct access to the host computer's processor. Much of Parallels' software is based on a lightweight hypervisor architecture, which provides the guest operating system direct access to the computer's hardware. Each Parallels virtual machine functions like a real computer with its own processor, RAM, floppy, CD drives, harddrive and tools. [edit] Desktop software Parallels is best known for its Intel-based Mac product Parallels Desktop for Mac. First released June 25, 2006, Parallels Desktop for Mac is a hardware emulation virtualization software that uses a lightweight hypervisor to enable users to run Windows, Linux and other operating systems simultaneously with Mac OS X on their Intel based Macs. First released December 8, 2005, Parallels Workstation enables users to create multiple, independent virtual machines on one PC. Workstation consists of a virtual machine suite for Intel x86-compatible computers (running Microsoft Windows or Linux), which allows the simultaneous creation and execution of multiple x86 virtual machines. Workstation supports hardware x86 virtualization technologies such as Intel VT-x. [edit] Server software First release June 17, 2008, Parallels Server for Mac is a hypervisor-based server virtualization software that enables IT managers to run multiple Windows, Linux and Mac OS X Server operating systems on a single Mac Xserve.[21] As of its release, it is currently the only server virtualization solution for the Mac OS X server platform and that allows users to virtualize Mac OS X Leopard Server. Parallels Virtuozzo Containers is an operating system-level virtualization product designed for large-scale homogeneous server environments and data centers. Parallels Virtuozzo Containers is compatible with x86, x86-64 and IA-64 platforms. Parallels Virtuozzo Containers was first released under Parallels' former parent company SWsoft. The Linux version was released in 2001 while the Windows version was released in 2005. [edit] Automation software Parallels Plesk Control Panel allows a server administrator to set up new websites, e-mail accounts, and DNS entries through a friendly web-based interface. Parallels Plesk Control Panel for Linux/UNIX supports multiple POSIX platforms, including Red Hat Linux/Fedora, SUSE, Debian/Ubuntu and FreeBSD. Parallels Plesk Control Panel for Windows supports Windows Server 2003 and Windows Server 2008 operating systems. Parallels Automation System allows businesses to increase productivity and revenue by automating billing and provisioning of their services. POA is an enterprise solution/platform for Hosting Providers which automates provisioning of new hosting subscriptions to the hardware. Supports provisioning of Apache and IIS hosted websites, VPS hosting, Qmail, Open-Xchange and MS Exchange for mail hosting, as well as supports Sharepoint, Dynamics CRM, email filtering and Global Relay email archiving & compliance. Hosting Vendor adds new hardware nodes into POA infrastructure and basing on configuration templates sets up provisioning of Customer's Subscriptions to the new hardware. PBA-E is also an enterprise billing platform usually used along with POA to count and sell everything what POA provisions. Allows to configure the Store, Service Plans with prices, discounts, promotions. Supports registration of domains by means of number of special plugins. Might be used as billing engine for any other platform via API integration. [edit] See also Comparison of platform virtual machines for a list of related virtualization software products Hypervisor Operating system-level virtualization Virtual appliance Virtual machine Virtualization x86 virtualization Virtual disk image [edit] References ^ Worldwide Operations HQ at http://www.parallels href="http://www.vpshub.net">vps /en/contact ^ Parallels CEO Sees IPO in a Few Years, Not an Acquisition ^ http://www.parallels href="http://www.vpshub.net">vps /eu/ ^ a b InfoWorld Virtualization Report | David Marshall | InfoWorld | Parallels Announces Virtuozzo Containers 4.0 | January 29, 2008 08:03 PM | By David Marshall ^ SWsoft to abandon itself and become Parallels | The Register ^ SWsoft Parallels does Virtuozzo Containers 4.0 thing | The Register ^ Parallels acknowledges SWsoft ownership ^ SWsoft: : ^ http://www.parallels href="http://www.vpshub.net">vps /en/news/id,8345 ^ http://www.parallels href="http://www.vpshub.net">vps /en/news/id,8655 ^ http://www.parallels href="http://www.vpshub.net">vps /en/news/id,9121